/Engine/Source/Runtime/Engine/Classes/GameFramework/Pawn.h
Inform AIControllers that you've made a noise they might hear (they are sent a HearNoise message if they have bHearNoises==true) The instigator of this sound is the pawn which is used to call MakeNoise.
void PawnMakeNoise ( float Loudness, FVector NoiseLocation, bool bUseNoiseMakerLocation, [AActor](API\Runtime\Engine\GameFramework\AActor) * NoiseMaker )